US7597336B2 - Integration of an electronic air suspension system in an electronic air processing system - Google Patents

Integration of an electronic air suspension system in an electronic air processing system Download PDF

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Publication number
US7597336B2
US7597336B2 US11/016,771 US1677104A US7597336B2 US 7597336 B2 US7597336 B2 US 7597336B2 US 1677104 A US1677104 A US 1677104A US 7597336 B2 US7597336 B2 US 7597336B2
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United States
Prior art keywords
air
processing system
electronic control
air processing
air suspension
Prior art date
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Expired - Fee Related, expires
Application number
US11/016,771
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US20050212248A1 (en
Inventor
Klaus Karthaeuser
Roland Klement
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Application filed by Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Assigned to KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KLEMENT, ROLAND, KARTHAEUSER, KLAUS
Publication of US20050212248A1 publication Critical patent/US20050212248A1/en
Assigned to KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH CORRECTED COVER SHEET TO CORRECT APPLICATION NUMBE Assignors: KLEMENT, ROLAND, KARTHAEUSER, KLAUS
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/41—Fluid actuator
    • B60G2202/412—Pneumatic actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/50—Pressure
    • B60G2400/51—Pressure in suspension unit
    • B60G2400/512—Pressure in suspension unit in spring
    • B60G2400/5122—Fluid spring
    • B60G2400/51222—Pneumatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90—System Controller type
    • B60G2800/91—Suspension Control

Definitions

  • the invention relates to an air suspension system having an electronic control system, an air processing system having an electronic control system, as well as a control unit for an air suspension system and/or an air processing system.
  • Electronic air suspension systems also called electronic level control systems, and electronic air processing systems, which are each controlled by a separate system-inherent electronic control system, are known.
  • the system electronics of the air suspension systems of commercial vehicles are accommodated in their own electronic control unit, which is housed in the driver's cab of the commercial motor vehicle.
  • the engine is frequently arranged below the driver's cab.
  • the cable connection has to be led through by way of the pivot joint.
  • the disadvantages of this arrangement are the necessarily large cable length and the limited available space for the cable lead-through in the pivot joint.
  • the control unit of the air suspension system requires its own housing and its own electronic components, such as protective circuits for the power supply.
  • an air suspension system having an electronic control system wherein the electronic control system is integrated in an electronic control of an air processing system
  • a control unit for an air suspension system and/or an air processing system wherein the control unit combines the control electronics of the air suspension system and the electronic control of the air processing system as the central control unit.
  • both controls can be accommodated in only one housing, and several electronic components, such as the power supply, the communication driver, the sensor analyzing circuit, etc., can serve a dual purpose.
  • electronic components such as the power supply, the communication driver, the sensor analyzing circuit, etc.
  • hardware storage systems for the control electronics of the air suspension system and the electronic control of the air processing system can be utilized simultaneously.
  • Various control software can be used in a freely programmable computer and, as a result, components of the control unit can be used for the two purposes, that of the air suspension system and that of the air processing system.
  • all control signals for the air suspension system and the air processing system are guided out of the control unit by way of a bipolar cable.
  • the cable feed-through in the pivot joint can thereby be implemented in a space-saving manner.
  • a so-called “twisted pair” an interfering electromagnetic coupling-in can be minimized even when the cable length is relatively large, which is required in the case of a semitrailer.
  • the system information for the air suspension system and the air processing system is transmitted by way of a CAN bus interface.
  • different information in a standardized system can be transmitted by way of a bipolar cable.
  • the control unit is advantageously constructed such that different control software can be used in a freely programmable computer. This offers a maximum of flexibility.
  • the electronic control system of the air suspension system and the electronic control system of the air processing system preferably have a logic structure in their control programs, which are decoupled such that both control programs can be changed separately, particularly during a software update. In this manner, the two systems are largely independent on the software side.
  • the electronic control system of the air suspension system and the electronic control system of the air processing system preferably have a remote control connected directly to the control unit. The cabling expenditures are thereby minimized.
  • the electronic control system of the air suspension system and the electronic control system of the air processing system have an interface, which is established such that, in the case of vehicles without an electronic air processing system, the components of the air suspension system can be used without any modification. This ensures a high flexibility of the usage possibilities while minimizing the variety of components.
  • an electronic parking brake can be integrated in the air processing system.
  • electronic components such as the power supply, the communication driver, the sensor analyzing circuit, etc., are also utilized for the electronic parking brake.
  • a pressure sensor of an air suspension system can be integrated in the air processing system. This has the advantage of a compact construction.

Abstract

A combined central control unit is provided for an air suspension system and/or an air processing system. The air suspension system has an electronic control system characterized in that the electronic control system is integrated in the electronic control of the air processing system. Similarly, an air processing system has an electronic control system characterized in that the electronic control system is integrated in the electronic control of the air suspension system.

Description

BACKGROUND AND SUMMARY OF THE INVENTION
The invention relates to an air suspension system having an electronic control system, an air processing system having an electronic control system, as well as a control unit for an air suspension system and/or an air processing system.
Electronic air suspension systems, also called electronic level control systems, and electronic air processing systems, which are each controlled by a separate system-inherent electronic control system, are known.
The system electronics of the air suspension systems of commercial vehicles according to the prior art are accommodated in their own electronic control unit, which is housed in the driver's cab of the commercial motor vehicle. In the historical development, this was found to be expedient because the electronic control unit does not have to be sealed-off in the cab in a splash-proof manner and can be directly operated by way of a remote control. This, however, necessarily leads to the requirement that connection cables have to extend from the driver's cab to the control elements of the air suspension system. In the case of modern commercial motor vehicles, the engine is frequently arranged below the driver's cab. In order to obtain access to the engine, the driver's cab as a rule—at least in the case of the newer trucks—can be tilted by way of a pivot joint, so that the engine and the transmission line are freely accessible. In this case, the cable connection has to be led through by way of the pivot joint.
The disadvantages of this arrangement are the necessarily large cable length and the limited available space for the cable lead-through in the pivot joint. The control unit of the air suspension system requires its own housing and its own electronic components, such as protective circuits for the power supply.
It is object of the invention to reduce the cabling expenditures and to lower the system costs by reducing the individual structural members.
This object is achieved by an air suspension system having an electronic control system wherein the electronic control system is integrated in an electronic control of an air processing system, by an air processing system having an electronic control system wherein the electronic control system is integrated in an electronic control of an air suspension system, or by a control unit for an air suspension system and/or an air processing system, wherein the control unit combines the control electronics of the air suspension system and the electronic control of the air processing system as the central control unit.
As a result of the combination of the electronic control system of the air suspension system and the electronic control system of the air processing system in a central control unit, both controls can be accommodated in only one housing, and several electronic components, such as the power supply, the communication driver, the sensor analyzing circuit, etc., can serve a dual purpose. Likewise, hardware storage systems for the control electronics of the air suspension system and the electronic control of the air processing system can be utilized simultaneously. Various control software can be used in a freely programmable computer and, as a result, components of the control unit can be used for the two purposes, that of the air suspension system and that of the air processing system.
In an advantageous embodiment of the invention, all control signals for the air suspension system and the air processing system are guided out of the control unit by way of a bipolar cable. The cable feed-through in the pivot joint can thereby be implemented in a space-saving manner. In the case of a construction as a twisted cable, a so-called “twisted pair”, an interfering electromagnetic coupling-in can be minimized even when the cable length is relatively large, which is required in the case of a semitrailer.
Preferably, the system information for the air suspension system and the air processing system is transmitted by way of a CAN bus interface. In this manner, different information in a standardized system can be transmitted by way of a bipolar cable.
The control unit is advantageously constructed such that different control software can be used in a freely programmable computer. This offers a maximum of flexibility.
The electronic control system of the air suspension system and the electronic control system of the air processing system preferably have a logic structure in their control programs, which are decoupled such that both control programs can be changed separately, particularly during a software update. In this manner, the two systems are largely independent on the software side.
The electronic control system of the air suspension system and the electronic control system of the air processing system preferably have a remote control connected directly to the control unit. The cabling expenditures are thereby minimized.
In a preferred embodiment of the invention, the electronic control system of the air suspension system and the electronic control system of the air processing system have an interface, which is established such that, in the case of vehicles without an electronic air processing system, the components of the air suspension system can be used without any modification. This ensures a high flexibility of the usage possibilities while minimizing the variety of components.
In a preferred embodiment of the invention, an electronic parking brake can be integrated in the air processing system. In this manner, electronic components, such as the power supply, the communication driver, the sensor analyzing circuit, etc., are also utilized for the electronic parking brake.
In a preferred embodiment of the invention, a pressure sensor of an air suspension system can be integrated in the air processing system. This has the advantage of a compact construction.

Claims (15)

1. An air suspension system, comprising:
an electronic control system for the air suspension system;
an electronic control of an air processing system; and
wherein the electronic control system for the air suspension system is integrated in the electronic control of the air processing system having at least one of a common communication driver and sensor analyzing circuit.
2. An air processing system, comprising:
an electronic control system for an air processing system;
an electronic control of an air suspension system; and
wherein the electronic control system of the air processing system is integrated in the electronic control of the air suspension system having at least one of a common communication driver and sensor analyzing circuit.
3. A control unit for at least one of an air suspension system and an air processing system, comprising:
first control electronics of the air suspension system;
second control electronics of the air processing system; and
wherein the control unit has integrated therein as a central control unit the first and second control electronics and at least one of a common communication driver and sensor analyzing circuit.
4. The control unit according to claim 3, wherein all control signals for the air suspension system and the air processing system are guided out of the control unit by way of a bipolar cable.
5. The control unit according to claim 3, wherein system information for the air suspension system and the air processing system is transmitted by way of a CAN bus interface.
6. The control unit according to claim 4, wherein system information for the air suspension system and the air processing system is transmitted by way of a CAN bus interface.
7. The control unit according to claim 3, wherein the control unit is constructed such that various control software is useable in a freely programmable computer.
8. A control unit for at least one of an air suspension system and an air processing system, comprising:
first electronic control system of the air suspension system; and
second electronic control system of the air processing system,
the control unit having integrated therein as a central control unit the first and the second electronic control systems, wherein the first electronic control system of the air suspension system and the second electronic control system of the air processing system have a logic structure in their respective control programs which are decoupled such that the two control programs are changeable separately, and wherein the control unit includes at least one of a common communication driver and sensor analyzing circuit.
9. The control unit according to claim 3, wherein the first electronic control system of the air suspension system and the second electronic control system of the air processing system have a remote control connected directly to the control unit.
10. The control unit according to claim 3, wherein the first electronic control system of the air suspension system and the second electronic control system of the air processing system have an interface which is established such that, in a case of vehicles without an electronic air processing system, components of the air suspension system are useable without any modification.
11. An air processing system, comprising:
an electronic control system for an air processing system; and
an electronic control of an air suspension system,
wherein the electronic control system of the air processing system is integrated in the electronic control of the air suspension system, and
an electronic parking brake is integrated in the air processing system.
12. The air suspension system according to claim 1, wherein at least one pressure sensor of the air suspension system is integrated in the air processing system.
13. The air processing system according to claim 2, wherein at least one pressure sensor of the air suspension system is integrated in the air processing system.
14. The air processing system according to claim 11, wherein at least one pressure sensor of the air suspension system is integrated in the air processing system.
15. A motor vehicle, comprising:
an air suspension system; and
an air processing system;
wherein at least one pressure sensor of the air suspension system is integrated in the air processing system, and wherein at least one of a common communication driver and sensor analyzing circuit is integrated in the air processing system.
US11/016,771 2003-12-23 2004-12-21 Integration of an electronic air suspension system in an electronic air processing system Expired - Fee Related US7597336B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10360881A DE10360881A1 (en) 2003-12-23 2003-12-23 Integration of air suspension electronics in an electronic air treatment system
DE10360881.8 2003-12-23

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US20050212248A1 US20050212248A1 (en) 2005-09-29
US7597336B2 true US7597336B2 (en) 2009-10-06

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US (1) US7597336B2 (en)
EP (1) EP1547832B1 (en)
AT (1) ATE425027T1 (en)
DE (2) DE10360881A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080258253A1 (en) * 2003-10-08 2008-10-23 Wolfgang Fey Integrated Microprocessor System for Safety-Critical Regulations
US20110035104A1 (en) * 2009-04-15 2011-02-10 Judson Smith Suspension conversion method and apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005020626B4 (en) 2005-05-03 2012-07-19 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Braking device of a tractor-trailer combination with stretch braking function
DE102015000894A1 (en) 2015-01-23 2016-07-28 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Electronic parking brake system with external control

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DE4039005A1 (en) 1989-12-08 1991-06-13 Mitsubishi Electric Corp Control system for vehicle - has central control unit and two controllers responding to driver-command sensors to control two sets of devices
US5369584A (en) 1989-12-08 1994-11-29 Mitsubishi Denki Kabushiki Kaisha Control apparatus for a vehicle
DE4305958A1 (en) 1993-02-26 1994-09-01 Bosch Gmbh Robert System with at least two different system functions
US5678900A (en) * 1995-12-19 1997-10-21 Grau Gmbh Unloader for a source of air under pressure on vehicles
US6823251B1 (en) 1997-04-18 2004-11-23 Continental Teves Ag & Co., Ohg Microprocessor system for safety-critical control systems
DE19716197A1 (en) 1997-04-18 1998-10-22 Itt Mfg Enterprises Inc Microprocessor system for safety-critical regulations
DE19822529A1 (en) 1998-05-19 1999-12-09 Luebke Baumetal Gmbh Rainwater collector for downpipe
DE19835491A1 (en) 1998-08-06 2000-02-17 Continental Ag Level control device for vehicles with air springs
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DE19905172A1 (en) 1999-02-09 2000-08-10 Knorr Bremse Systeme Wireless remote control system for remote control of functions in motor vehicles
US6829893B2 (en) * 2002-11-14 2004-12-14 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Compressor arrangement, particularly for commercial vehicles, having an auxiliary compressor unit
US7194345B2 (en) * 2003-04-01 2007-03-20 Haldex Brake Products Gmbh Compressed air processing system for motor vehicles
US20050017474A1 (en) * 2003-07-24 2005-01-27 Siegfried Heer Compressed air processing apparatus for compressed air systems of motor vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080258253A1 (en) * 2003-10-08 2008-10-23 Wolfgang Fey Integrated Microprocessor System for Safety-Critical Regulations
US8412409B2 (en) * 2003-10-08 2013-04-02 Continental Teves Ag & Co. Ohg Integrated microprocessor system for safety-critical regulations
US20110035104A1 (en) * 2009-04-15 2011-02-10 Judson Smith Suspension conversion method and apparatus

Also Published As

Publication number Publication date
EP1547832A1 (en) 2005-06-29
ATE425027T1 (en) 2009-03-15
DE502004009126D1 (en) 2009-04-23
DE10360881A1 (en) 2005-07-28
EP1547832B1 (en) 2009-03-11
US20050212248A1 (en) 2005-09-29

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